package com.itmuch.contentcenter.utils;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
    public class ApplicationContextUtil implements ApplicationContextAware {
        @Autowired
        private static ApplicationContext context;

        /**
         * 插入ApplicationContext
         */
        @Override
        public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
            context = applicationContext;
        }
        /**
         * 获取ApplicationContext
         */
        public static ApplicationContext getApplicationContext() {
            return context;
        }


        /**
         * 通过name获取 Bean
         */
        public static Object getBean(String name) {
            return getApplicationContext().getBean(name);
        }


        /**
         * 通过class获取Bean.
         */
        public static <T> T getBean(Class<T> clazz) {
            return getApplicationContext().getBean(clazz);
        }

        /**
         *通过name,以及Clazz返回指定的Bean
         */
        public static <T> T getBean(String name, Class<T> clazz) {
            return getApplicationContext().getBean(name, clazz);
        }
    }

